/**
 * Licensed to Apereo under one or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information regarding copyright ownership. Apereo
 * licenses this file to you under the Apache License, Version 2.0 (the "License"); you may not use
 * this file except in compliance with the License. You may obtain a copy of the License at the
 * following location:
 *
 * <p>http://www.apache.org/licenses/LICENSE-2.0
 *
 * <p>Unless required by applicable law or agreed to in writing, software distributed under the
 * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 * express or implied. See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apereo.portal.portlet.rendering.worker;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.context.i18n.LocaleContextHolder;
import org.springframework.stereotype.Service;
import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;

/**
 * Copies {@link LocaleContextHolder} data from the portal request thread into the portlet execution
 * thread and cleans up afterwards.
 */
@Service("RequestContextThreadLocalPortletExecutionInterceptor")
public class RequestContextThreadLocalPortletExecutionInterceptor
        extends ThreadLocalPortletExecutionInterceptor<RequestAttributes> {

    @Override
    protected RequestAttributes getThreadLocalValue(
            HttpServletRequest request,
            HttpServletResponse response,
            IPortletExecutionContext context) {
        return RequestContextHolder.getRequestAttributes();
    }

    @Override
    protected void setThreadLocalValue(
            HttpServletRequest request,
            HttpServletResponse response,
            IPortletExecutionContext context,
            RequestAttributes value) {
        if (value == null) {
            RequestContextHolder.resetRequestAttributes();
        } else {
            RequestContextHolder.setRequestAttributes(value);
        }
    }
}
